W3C home > Mailing lists > Public > public-rif-wg@w3.org > January 2009

Re: draft public comment for OWL last call from RIF

From: Chris Welty <cawelty@gmail.com>
Date: Thu, 22 Jan 2009 18:16:07 -0500
Message-ID: <4978FE37.4050007@gmail.com>
To: Dave Reynolds <der@hplb.hpl.hp.com>
CC: "Public-Rif-Wg (E-mail)" <public-rif-wg@w3.org>


Given ensuing discussion I am OK with this as the response to OWL:

Dave Reynolds wrote:
> We have reviewed the OWL choices for the XML schema datatypes and have 
> found them acceptable for RIF with one major exception, and some minor 
> ones.
> 
> Our primary concern is that we do not see how we can work with the 
> redefinition of xsd numeric datatypes with overlapping (non-disjoint) 
> value spaces.  While we all agreed the idea of e.g. "1.0"^^xsd:double 
> and "1"^^xsd:decimal being the same entity makes sense, RIF adds a set 
> of builtin functions and predicates to its chosen xsd's and these are 
> based on a wide implementation base that assume disjointness of xsd 
> value spaces.  Breaking these implementations would negatively impact 
> interchange and significantly raise the "barrier to entry".
> 
> Of lesser concern we do not see value for our user base in adopting 
> owl:rational but note that is already At Risk in the current OWL2 
> drafts. We also do not see value in requiring support for the string 
> subtypes xsd:normalizedString, xsd:token, xsd:Name, xsd:NCName and 
> xsd:NMTOKEN.  


-- 
Dr. Christopher A. Welty                    IBM Watson Research Center
+1.914.784.7055                             19 Skyline Dr.
cawelty@gmail.com                           Hawthorne, NY 10532
http://www.research.ibm.com/people/w/welty
Received on Thursday, 22 January 2009 23:16:56 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 2 June 2009 18:34:00 GMT